November 06, 1909

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Features

Improvements in New york's High-Pressure Fire Service

Dover's Great Artificial Harbor

The America's Cup

Electricity

Engineering

Science

A Remarkable Mexican Concrete Conduit at Guadalajara

By Frank C. Perkins

Some Principles of Ball-Bearing Design

By J. F. Springer

Terrific Boiler Explosion in Milwaukee

A Curious Star Map

The Number of Our Ancestors

Some Curiosities of Invention

The 10,000-Ton Suction Dredger “Leviathan” for Use on the Mersey

The Attitude of Diplodocus

Birds of Passage

By B. S. Bowdish

The Ophthalmo-Diaphanoscope

Testing Bitumens for Pavements

Departments

Departments

Correspondence

New Books, Etc.

Recently Patented Inventions

Index of Inventions

Patents

Purchase To Read More

Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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